Double probe Black/White easy-to-clean case A portable smart food safety detector, suitable for checking fruits, vegetables, meat and fish. The equipment uses the latest nitrate detection technology to quickly and accurately detect the nitrate content of more than 64 most common types of food. In just 3 seconds, Greentest 2F can tell you whether the nitrate content of your fruits, vegetables, meat and fish exceeds the standard and whether the food is safe to eat. The latest version is equipped with a capacitive screen, which is more sensitive to touch. Bluetooth module is added along with connection to the mobile APP for data storage and sharing. Timer function is added to help control the cooking time.